diff --git a/doc/DevInfo.txt b/doc/DevInfo.txt
index 400a94bf..56148099 100644
--- a/doc/DevInfo.txt
+++ b/doc/DevInfo.txt
@@ -16,6 +16,7 @@ Known preprocessor switches:
- NO_D3D: Exclude Direct3D code
- NO_OAL: Exclude OpenAL code
- NO_XAUDIO2: Exclude XAudio2 code (the XAudio2 interface is DirectSound's successor)
+- WIN64: This macro is only defined for 64 bit builds
diff --git a/project/vc2008_mfc/VBA2008.sln b/project/vc2008_mfc/VBA2008.sln
index 2478f6fc..90fc9f42 100644
--- a/project/vc2008_mfc/VBA2008.sln
+++ b/project/vc2008_mfc/VBA2008.sln
@@ -10,17 +10,27 @@ EndProject
Global
GlobalSection(SolutionConfigurationPlatforms) = preSolution
Debug|Win32 = Debug|Win32
+ Debug|x64 = Debug|x64
Release|Win32 = Release|Win32
+ Release|x64 = Release|x64
EndGlobalSection
GlobalSection(ProjectConfigurationPlatforms) = postSolution
{6D4C5EC8-933F-4C05-A1BF-498E658576DF}.Debug|Win32.ActiveCfg = Debug|Win32
{6D4C5EC8-933F-4C05-A1BF-498E658576DF}.Debug|Win32.Build.0 = Debug|Win32
+ {6D4C5EC8-933F-4C05-A1BF-498E658576DF}.Debug|x64.ActiveCfg = Debug|x64
+ {6D4C5EC8-933F-4C05-A1BF-498E658576DF}.Debug|x64.Build.0 = Debug|x64
{6D4C5EC8-933F-4C05-A1BF-498E658576DF}.Release|Win32.ActiveCfg = Release|Win32
{6D4C5EC8-933F-4C05-A1BF-498E658576DF}.Release|Win32.Build.0 = Release|Win32
+ {6D4C5EC8-933F-4C05-A1BF-498E658576DF}.Release|x64.ActiveCfg = Release|x64
+ {6D4C5EC8-933F-4C05-A1BF-498E658576DF}.Release|x64.Build.0 = Release|x64
{7AEC599C-7C82-4F00-AA60-411E0A359CB0}.Debug|Win32.ActiveCfg = Debug|Win32
{7AEC599C-7C82-4F00-AA60-411E0A359CB0}.Debug|Win32.Build.0 = Debug|Win32
+ {7AEC599C-7C82-4F00-AA60-411E0A359CB0}.Debug|x64.ActiveCfg = Debug|x64
+ {7AEC599C-7C82-4F00-AA60-411E0A359CB0}.Debug|x64.Build.0 = Debug|x64
{7AEC599C-7C82-4F00-AA60-411E0A359CB0}.Release|Win32.ActiveCfg = Release|Win32
{7AEC599C-7C82-4F00-AA60-411E0A359CB0}.Release|Win32.Build.0 = Release|Win32
+ {7AEC599C-7C82-4F00-AA60-411E0A359CB0}.Release|x64.ActiveCfg = Release|x64
+ {7AEC599C-7C82-4F00-AA60-411E0A359CB0}.Release|x64.Build.0 = Release|x64
EndGlobalSection
GlobalSection(SolutionProperties) = preSolution
HideSolutionNode = FALSE
diff --git a/project/vc2008_mfc/VBA2008.vcproj b/project/vc2008_mfc/VBA2008.vcproj
index 30a7c422..beb25eb9 100644
--- a/project/vc2008_mfc/VBA2008.vcproj
+++ b/project/vc2008_mfc/VBA2008.vcproj
@@ -12,6 +12,9 @@
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@@ -574,6 +794,14 @@
WholeProgramOptimization="true"
/>
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@@ -864,6 +1246,22 @@
CompileAs="1"
/>
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